So, I have an windows 8 acer laptop. I did not upgrade to windows 8 from windows 7, I bought an acer laptop that had windows 8. All of a sudden a plug in crashed and they were doing and upgrade, I was stupid enough to turn off the laptop and after the acer logo came on, it goes to " operating system not found on the top left corner. I pressed F2 and got to the system settings. I changed a couple things that I HAVE NO IDEA WHAT I AM DOING and everytime it shows up something new I just keep pressing control-alt-delete and it keeps flashing over and over. IDK what to do.